The plane was equipped to land on water, and though it was partially under water, its pontoons were keeping it buoyed up near the surface, he said.

First responders performed CPR on the woman and she was taken to a hospital, where she remained in critical condition, Wade said.

The man suffered from a head injury and was in stable condition.

Wade said that officials don’t know why the plane crashed, and that the National Transportation Safety Board has been notified.

Advisory: a small two seat aircraft crashed into the American River just East of Interstate 5 and Discovery Park. 2 patients, Male and Female, were transported to a local trauma hospital. Multiple cooperating agencies on scene to deal with removal and investigation. pic.twitter.com/8TwgPgQmic